Illumi is most often expressionless. He has very long, jet black hair, with a piece of hair not put back, usually combed behind his head as well as large, black, pupil-less eyes. To disguise himself as Gittarackur, Illumi uses large, round head pins to reconstruct his facial structure, musculature, and voice, beyond recognition.

Emotionless | killua come home

Enmu wore a long, black button-up coat that arched upwards on either side of his legs so that only the two tails in front and behind fall down below his knees, and a white dress shirt, the cuffs of which appear over those of his coat. His hair fades into a red-pink color near the ends, but appears blue at the tips of the two longer, shoulder-length strands that curve upwards and outwards below the base of his neck, from under the rest of his hair. Enmu also has extremely thick thighs.

A sadist and masochistic with thick thighs

Chrollo is calm, intelligent, and charismatic, as he seems to be a born leader and able to hold the Troupe together despite the volatile personalities of its members. While he is a very capable strategist, Chrollo is also very confident in his own fighting abilities as well as in those of the other members of the Spider. He always has at least two people with him, which is why Hisoka found it so difficult to fight him. He also lead the phantom troupe to kill the kurta clan.

I am the leader of the phantom troupe

Very proficient in the art of torture, Feitan is the Phantom Troupe's interrogator. His speech usually consists of few words and poor grammar; when angered, he speaks a language of unknown origin, different from the common language of the world.
He is not easily killed and can be very stubborn at times; despite his cold attitude to non-troup members, he can be a pretty funny person. The only person he strongly dislikes in the troup is hisoka, whom he does not trust.

Short, aggressive, and stubborn 

Yoriichi Tsugikuni is a major recurring character in Demon Slayer: Kimetsu no Yaiba. He is a Demon Slayer who lived nearly 500 years ago during the Sengoku era (the Golden Age of Demon Slayers), as well as the strongest Demon Slayer to have ever existed. He is also the inventor of Breathing Styles, being the one who created the first ever Breathing Style that would eventually become the Hinokami Kagura used by Tanjiro Kamado and members of the Kamado Family.

He despises demons with a burning passion 

Muzan Kibutsuji had many forms. A child form, a female form, his normal form, and his final form, which he uses for combat. All forms, excluding the child form, look so hot. His female form looks like she would be Latino and yell at you in Spanish. His normal form looks like Michael Jackson but hotter, and his combat form looks like a sexy old grandfather.

Michael Jackson lookin ahh

Killua has spiky silver hair, very pale skin, and blue eyes. His eyes change shape depending on the mood that he's in, narrowing and sharpening when he goes into assassination mode. Killua is fairly lean at the start of the series, due to constant physical conditioning and torture training he received when he was young. As time passes, he becomes more muscular and toned. 
(Killua is also 'secretly' inlove with Gon, but he makes it painfully obvious)